package com.yeren.utils;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.ConnectException;
import java.net.URL;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Formatter;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;

import net.sf.json.JSONException;
import net.sf.json.JSONObject;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.yeren.dto.TokenDTO;
import com.yeren.service.GetTokenService;


/**
 * 
 * @author liubiao
 *
 */
public class CommonUtil {
	private static Logger log=LoggerFactory.getLogger(CommonUtil.class);
	/**
	 * 发送HTTPS请求
	 * @param requestUrl 请求地址
	 * @param requestMethod 请求方式（get，post）
	 * @param outputStr 提交的数据
	 * @return 
	 */
	public static JSONObject httpsRequest(String requestUrl,String requestMethod,String outputStr){
		JSONObject jsonObject=null;
		try{
			//创建SSLContext对象，并使用我们指定的信任管理器初始化
			TrustManager[] tm={new MyX509TrustManager()};
			SSLContext sslContext=SSLContext.getInstance("SSL","SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			//从上述描述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf=sslContext.getSocketFactory();
			
			URL url=new URL(requestUrl);
			HttpsURLConnection conn=(HttpsURLConnection) url.openConnection();
			conn.setSSLSocketFactory(ssf);
			conn.setDoOutput(true);
			conn.setDoInput(true);
			conn.setUseCaches(false);
			//设置请求方式（get/post）
			conn.setRequestMethod(requestMethod);
			
			//当outputStr不为null时，向输出流写数据
			if(null!=outputStr){
				OutputStream outputStream=conn.getOutputStream();
				//注意编码格式
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}
			
			//从输入流读取返回内容
			InputStream inputStream=conn.getInputStream();
			InputStreamReader inputStreamReader=new InputStreamReader(inputStream,"utf-8");
			BufferedReader bufferedReader=new BufferedReader(inputStreamReader);
			String str=null;
			StringBuffer buffer=new StringBuffer();
			while((str=bufferedReader.readLine())!=null){
				buffer.append(str);
			}
			
			//释放资源
			bufferedReader.close();
			inputStreamReader.close();
			inputStream.close();
			inputStream=null;
			conn.disconnect();
			jsonObject=jsonObject.fromObject(buffer.toString());
			
		}catch (ConnectException ce){
			log.error("连接超时：{ }",ce);
		}catch (Exception e) {
			log.error("http请求异常：{ }",e);
		}
		return jsonObject;
	}
	
	
	
	
	/**
	 * URL编码（utf-8）
	 * 
	 * @param source
	 * @return String
	 */
	public static String urlEncodeUTF8(String source) {
		String result = source;
		try {
			result = java.net.URLEncoder.encode(source, "utf-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		return result;
	}
	
	
	public static String get_jsapi_ticket(String appid,String appsecret){
		//1获取accessToken
		String accessToken = GetTokenService.getToken(appid, appsecret).getAccessToken();
		//2获取JSTicket
		String requestUrl="https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi";
		requestUrl = requestUrl.replace("ACCESS_TOKEN", accessToken);
		JSONObject jsonObject = CommonUtil.httpsRequest(requestUrl, "GET", null);
		String ticket = null;
	        if (null != jsonObject) {
	            try {
	                ticket = jsonObject.getString("ticket");
	            } catch (JSONException e) {
	                // 获取token失败
	                log.error("获取token失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));
	            }
	        }
	    return ticket;
	} 
	
	public static String get_JS_Signature(String jsapi_ticket,String noncestr,long timestamp,String url){
		String str = "jsapi_ticket=" + jsapi_ticket +"&noncestr=" + noncestr +"&timestamp=" + timestamp +"&url=" + url;
		String signature="";
		 try
	        {
	            MessageDigest crypt = MessageDigest.getInstance("SHA-1");
	            crypt.reset();
	            crypt.update(str.getBytes("UTF-8"));
	            return signature = byteToHex(crypt.digest());
	        }
	        catch (NoSuchAlgorithmException e)
	        {
	            e.printStackTrace();
	        }
	        catch (UnsupportedEncodingException e)
	        {
	            e.printStackTrace();
	        }
		return null;
	}
	
	private static String byteToHex(final byte[] hash) {
        Formatter formatter = new Formatter();
        for (byte b : hash)
        {
            formatter.format("%02x", b);
        }
        String result = formatter.toString();
        formatter.close();
        return result;
    }
	
	public static void main(String[] args) {
//		String ticket=A.get_jsapi_ticket("wxf9b54a0426aab166", "8481d5df777deb142eb3a18b2691f95b");
		String ticket="sM4AOVdWfPE4DxkXGEs8VMCPGGVi4C3VM0P37wVUCFvkVAy_90u5h9nbSlYy3-Sl-HhTdfl2fzFy1AOcHKP7qg";
//		String noncestr=UUID.randomUUID().toString();
		String noncestr="Wm3WZYTPz0wzccnW";
//		long timestamp = System.currentTimeMillis() / 1000;
		long timestamp =1414587457;
//		String url="http://mp.weixin.qq.com?params=value";
		String url="http://yeren108.duapp.com";
		
		String signature=get_JS_Signature(ticket, noncestr, timestamp, url);
		System.out.println("signature:"+signature);
		
	}
}
